Use Triple DES with python. Package `cryptography` or `pyDes` is required.

triple_des_decryption.py

import base64

from cryptography.hazmat.primitives.ciphers import Cipher, algorithms, modes
from cryptography.hazmat.backends import default_backend
from cryptography.hazmat.primitives.padding import PKCS7

backend = default_backend()

ct = b'iWdEgY1YmHSjoW13UIQ52w=='  # base64 encoded ciphertext
secret = b'olQFK9LzdoGnPcwBcBhvy8rG'
iv = b'20190910'
block_size = len(iv) * 8

padding = PKCS7(block_size)
cipher = Cipher(algorithms.TripleDES(secret), modes.CBC(iv), backend=backend)

decryptor = cipher.decryptor()
decrypted = decryptor.update(base64.b64decode(ct)) + decryptor.finalize()

unpadder = padding.unpadder()
unpadded = unpadder.update(decrypted) + unpadder.finalize()

print(unpadded.decode())

triple_des_decryption_2.py

import base64

import pyDes

ct = b'iWdEgY1YmHSjoW13UIQ52w=='  # base64 encoded ciphertext
secret = b'olQFK9LzdoGnPcwBcBhvy8rG'
iv = b'20190910'

k_cbc = pyDes.triple_des(secret, pyDes.CBC, iv, pad=None, padmode=pyDes.PAD_PKCS5)
data = k_cbc.decrypt(base64.b64decode(ct)).decode()
print(data)